상하up and down 상수tap water 세상world 영상temperature above zero 탁상시계table clock 향상improvement; enhancement; progress 사상being in history 상good; top 상급반upper grades; higher grades 상급자senior; superior

초급elementary level; beginning stage 초급반beginner's class 최고급the highest grade; top-level 특급special class; special rank; special grade 하급생junior student; underclassman 고급high quality; high grade 고급반class for advanced learners; the highest-level class 고급품high-end product 고급화enhancement 상급반upper grades; higher grades

학생student 대학생university student 중학생middle-schooler 여학생female student 남학생male student 초등학생elementary school student; primary school student 생일birthday 출생birth 인생human life 학교생활school life; student life